Category: jPDFViewer: PDF Viewing Component

To change the initial magnification settings when opening PDF documents in Qoppa’s PDF components and ignore the magnification settings contained in the PDF document (if any), make the following method calls immediately after instantiating the PDF bean, before opening any PDF document: Set a Fit To Width Magnification: Display with the page magnified just enough […]

Q: Is it possible to remove the black border around pages in Qoppa’s PDF component? See screenshot below. A: Yes, it is. See code sample below. Modifying the border we use on page view components can be done with an IPDFListener after the document is opened.  Also the documentChanged() method needs to  be overwritten to modify the […]

In v2016R1, we’re adding settings to turn off warning in JavaScript for the submitForm and mailDoc function. Turn off warning on submitform // turn off warning in submitform function // before connecting to a URL JavaScriptSettings.setSubmitFormWarn(false);// turn off warning in submitform function // before connecting to a URL JavaScriptSettings.setSubmitFormWarn(false);   Turn off warning on maildoc […]

Q: We’re having an issue using PDFViewerBean when adding a button to the toolbar. The issue appears periodically. The code: JButton button = new JButton ("Some button"); PDFViewerBean.getSelectToolbar().add(button); button.addActionListener(someListener);JButton button = new JButton ("Some button"); PDFViewerBean.getSelectToolbar().add(button); button.addActionListener(someListener); The exception stack trace: java.lang.NullPointerException at java.awt.EventQueue$2.isDispatchThreadImpl(Unknown Source) at sun.awt.SunToolkit.isDispatchThreadForAppContext(Unknown Source) at javax.swing.JComponent.revalidate(Unknown Source) at javax.swing.JComponent.setBorder(Unknown Source) at […]

The sample below shows how to change the select cursor on annotations components. This done by adding a IPDFListener to the PDFNotesBean and implementing the method afterDocOpened(). In this method, the cursor of annotations components is changed to the predefined hand cursor. PDFNotesBean notesBean = new PDFNotesBean(); // !! This is important to ensure that […]

Q: How can I change the main document pane background, where one can view and navigate through the PDF pages, in Qoppa’s PDF components jPDFViewer, jPDFNotes or jPDFEditor? A: This is how you can change the main pane background: pdfNotesBean.getRootPane().getContentPane().setBackground(Color.darkGray);pdfNotesBean.getRootPane().getContentPane().setBackground(Color.darkGray);

You can add a DropTargetListener to your application or frame in order to listen to PDF files being dropped and then have the files be opened in Qoppa’s PDF component (jPDFViewer, jPDFNotes, jPDFEditor). We have implemented this feature in our sample demo applications so you can download our demo to try and then look into […]

Q: Are Qoppa products able to load large PDF documents that are linearized efficiently ver the web in order to render them fast into Qoppa’s PDF components? A: We’re almost done implementing this feature which will make it much faster to be able to display the first page of large linearized PDFs when streaming them […]

Sample code to change Thumbnail / Pages Panel background color. You need to get the thumbnail list from the thumbnail panel and set the background color on the list. PDFNotesBean = new PDFNotesBean(); pdfNotes.getThumbnailPanel().getThumbList().setBackground(Color.red);PDFNotesBean = new PDFNotesBean(); pdfNotes.getThumbnailPanel().getThumbList().setBackground(Color.red);